Industrial Communication

RS-232, RS-422, RS-485, and Modbus: A Detailed Explanation of Industrial Communication Standards

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RS-232, RS-422, RS-485, and Modbus: A Detailed Explanation of Industrial Communication Standards

These communication standards play different roles in industrial automation. Let me use a traffic system analogy to help you understand: Basic Positioning of the Four Standards 1. RS-232: A One-to-One Small Road Features: The earliest serial communication standard (1969) Point-to-point full-duplex communication (simultaneous two-way) Single-ended signal transmission (susceptible to interference) Typical transmission distance ≤ 15 … Read more

Modbus: The Common Language of Industrial Communication

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Modbus: The Common Language of Industrial Communication

Modbus–The Common Language of Industrial Communication Why Do We Need Modbus? —— How the Common Language of Industrial Communication Ends the “Babel Tower Dilemma” 1. The Era Before Modbus: The “Babel Tower Dilemma” of Industrial Communication In the factory workshops of the 1970s, the dialogue between equipment was like a chaotic “Babel Tower”: Device A … Read more

Introduction and Troubleshooting of RS-485 Communication Interface for Siemens S7-200 PLC

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Introduction and Troubleshooting of RS-485 Communication Interface for Siemens S7-200 PLC

Click on the above “ Technical Training ”, select “Pin to Top” 130,000+ industrial control professionals follow this WeChat platform: technical sharing, learning exchange, industrial control videos 1. Introduction In recent years, computer control has been rapidly promoted and popularized. Industrial control computers, PLCs, frequency converters, touch screens, robots, and flexible manufacturing systems are widely … Read more

Understanding Modbus RTU, ASCII, and TCP Protocols

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Understanding Modbus RTU, ASCII, and TCP Protocols

01 Terminology Interpretation 1 word = 2 bytes; 1 byte = 8 bits. Checksum: A checksum is derived from the preceding data through a certain algorithm to verify the correctness of the data set. When inputting codes as data into a computer or other devices, input errors can easily occur. To reduce such input errors, … Read more

S7-400 One-Way Communication Based on PROFIBUS (STEP7 v1x)

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S7-400 One-Way Communication Based on PROFIBUS (STEP7 v1x)

The S7 protocol is the standard protocol used for communication between SIEMENS S7 series products. Its advantage is that both communication parties can establish a communication connection through the S7 protocol, regardless of whether they are on the same MPI bus, the same PROFIBUS bus, or the same Industrial Ethernet. The data exchange is independent … Read more

Overview of Modbus Communication – Series 17

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Overview of Modbus Communication - Series 17

Click Jicheng Training WeChat Follow me! ☀ Jicheng Training Network’s official WeChat is the most professional and concentrated in the industrial control field, providing technical sharing, free videos, and a communication platform. Follow Jicheng, and there will be no problem in improving your skills! 1. Overview All the content that needs to be discussed regarding … Read more

Understanding PLC Communication: Application and Programming of MODBUS Protocol

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Understanding PLC Communication: Application and Programming of MODBUS Protocol

Now, let’s explain the application of MODBUS. Currently, most industrial control communication between the upper computer and the lower computer uses the communication protocol MODBUS. It is easy to imagine the importance of communication between machines. 1. MODBUS System Framework Diagram 2. Application of MODBUS The underlying communication of MODBUS uses RS485 signals connected via … Read more

How to Control EtherCAT Bus with Huichuan Servo

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How to Control EtherCAT Bus with Huichuan Servo

EtherCAT is a commonly used industrial field bus that features a flexible network topology, simple system configuration, and intuitive operation similar to field bus systems. Additionally, due to the low implementation cost of EtherCAT, it has become a viable option in situations where field bus networks were previously not applicable. Next, we will use Huichuan … Read more

S7-1500 Multi-Machine Coordinated Control Tutorial

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S7-1500 Multi-Machine Coordinated Control Tutorial

Hello everyone, I am Liu Lu. Today we will discuss the multi-machine coordinated control of S7-1500 PLCs. This technology allows multiple PLCs to work together, just like a group of friends working together to complete a big project. Whether you want to enhance your factory’s automation level or want to explore advanced techniques, this technology … Read more

Selected Technical Articles on CANopen Bus

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Selected Technical Articles on CANopen Bus

Author’s Note To make it easier for everyone to find technical articles related to the CANopen bus, we have specially compiled a collection of selected technical articles on CANopen published on the ‘Industrial Communication’ public account. We welcome everyone to check them out, and if you have any questions or suggestions, please feel free to … Read more